Vol. VIII] VAN DENBURGH AND SLEVIN— GARTER-SNAKES 227 



81. Little Sur River, Monterey Co., Cal. 



82. Partington Canyon, Monterey Co., Cal. 



83. Morro, San Luis Obispo Co., Cal. 



84. Oceano, San Luis Obispo Co., Cal. 



85. Santa Ynez River, Santa Barbara Co., Cal, 



Material. — Three hundred and sixty-three specimens from 

 these localities have been studied by us. 



Variation. — The variations shown by these specimens are as 

 follows : 



The loreal is 1 — 1 in all specimens. Preoculars are 1 — 1 in 

 three hundred and thirty-nine, or 93% ; 2 — 2 in fifteen, or 4% ; 

 1 — 2 in seven, or 1 % ; and 2 — 3 in one. Postoculars are 3 — 3 

 in three hundred and twenty-one, or 88% ; 3 — 4 in fifteen, or 

 4% ; 2 — 3 in ten, or 2% ; 2 — 2 in eight, or 2% ; 4 — 4 in six, or 

 1% ; 4 — 5 in one, and 1 — 2 in one. Temporals are l-|-2 — 1-|-2 

 in two hundred and eighty, or 77% ; l-f-2 — l-f3 in forty- four, 

 or 12% ; l-f-3 — 1-|-3 in sixteen, or 4% ; 1 + 1 — 1 + 1 in ten, or 

 2%; 1 + 1—1+2 in five, or 1%; 1 + 1—2+2 in two, 1+2— 

 2+2 in two, 1 + 1 — 1+3 in one, and 1+3 — 2+2 in one. The 

 supralabials are 8 — 8 in three hundred and nine, or 85% ; 7 — 7 

 in twenty-six, or 7% ; 7 — 8 in twenty-five, or 6% ; 8 — 9 in one, 

 and 9 — 9 in one. The infralabials are 10 — 10 in two hundred 

 and seventy-two, or 75% ; 9 — 10 in forty- four, or 12% ; 9 — 9 

 in thirty-two, or 8%; 10 — 11 in five, or 1%; 8 — 9 in three, 

 8 — 10 in three, 11 — 11 in two, and 8 — 8 in one. The scale- 

 rows are 19 — 19 — 17 in two hundred and fifty-five, or 71%; 

 19 — 21 — 17 in twenty-seven, or 7%; 21 — 21 — 17 in twenty- 

 two, or 6%; 19—21—19 in twenty-one, or 6%; 21—21—19 

 in nine, or 2% ; 21—19—17 in six, or 1 % ; 17—19—17 in four, 

 or 1% ; 19—19—19 in three, 19—20—19 in three, 20—21—19 

 in one, 17 — 18 — 17 in one, 19 — 19 — 15 in one, and 20 — 21 — 17 

 in one. The gastrosteges vary in number from 140 to 172, 

 males having from 146 to 172, females from 140 to 168; the 

 average in one hundred and fifty males is 158, in two hundred 

 and four females, 153. The urosteges vary from 52 to 93, 

 males having from 63 to 93, females from 52 to 98 ; the aver- 

 age in one hundred and thirty-one males is 81, in one hundred 

 and sixty-eight females, 74. These variations are shown in 

 full in the following table of scale-counts. 



